Přístupnostní navigace
E-přihláška
Vyhledávání Vyhledat Zavřít
Detail publikace
BABINSKÝ, T. KUBĚNA, I. ŠULÁK, I. KRUML, T. TOBIÁŠ, J. POLÁK, J.
Originální název
Surface relief evolution and fatigue crack initiation in Rene 41 superalloy cycled at room temperature
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Surface relief evolution and fatigue crack initiation of Rene 41 superalloy was studied. The material was tested in two thermodynamical states: solutionised and aged. Cylindrical specimens were cycled at total strain amplitude 0.8% at room temperature. In order to study relevant mechanisms resulting in surface relief formation and eventually fatigue crack initiation, cycling was interrupted at definite number of elapsed cycles. After each interruption, the specimen surface was observed by means of scanning electron microscopy and thin lamellae were cut out of the surface and observed by means of transmission electron microscopy. Cyclic deformation was found to localise since the first cycle, causing the formation of persistent slip bands and persistent slip markings in the form of slip steps, extrusions and later intrusions as well. Continuous cycling led to the formation of new persistent slip markings as well as widening of the already existing ones. The role of persistent slip markings in fatigue crack initiation at room temperature was found to be crucial in this superalloy. The results were thoroughly discussed in relation to theoretical models of surface relief formation.
Klíčová slova
Low cycle fatigue; Surface relief evolution; Cyclic slip localisation; Persistent slip bands; Fatigue crack initiation
Autoři
BABINSKÝ, T.; KUBĚNA, I.; ŠULÁK, I.; KRUML, T.; TOBIÁŠ, J.; POLÁK, J.
Vydáno
5. 6. 2021
Nakladatel
ELSEVIER SCIENCE SA
Místo
LAUSANNE
ISSN
0921-5093
Periodikum
Materials Science and Engineering A
Ročník
819
Číslo
141520
Stát
Švýcarská konfederace
Strany počet
14
URL
https://www.sciencedirect.com/science/article/pii/S0921509321007899?via%3Dihub
BibTex
@article{BUT180803, author="Tomáš {Babinský} and Ivo {Kuběna} and Ivo {Šulák} and Tomáš {Kruml} and Jiří {Tobiáš} and Jaroslav {Polák}", title="Surface relief evolution and fatigue crack initiation in Rene 41 superalloy cycled at room temperature", journal="Materials Science and Engineering A", year="2021", volume="819", number="141520", pages="14", doi="10.1016/j.msea.2021.141520", issn="0921-5093", url="https://www.sciencedirect.com/science/article/pii/S0921509321007899?via%3Dihub" }